Electrical cleaning bath



Jan. 19, 1937. p J GREULACH 2,068,408

ELECTRICAL CLEANING BATH Filed Oct 21, 1935 3 Sheets-Sheet 2 III! g aodwkw MA [lornels km Inventor--- Jan. 19, 19370 P. J. GREULACH ELECTRICAL CLEANING BATH 5 Sheets-Sheet 3 Filed Oct. 21, 1955 Q 2 0105 J grew/[@070 E g w and 5 A ilomeys Patented Jan. 19, 1937 UNITED STATES PATENT 4 OFFICE 1 Claim.

This invention appertains to new and useful improvements in cleaning apparatus and more particularly to an apparatus for cleaning spectacles and like articles.

The principal object of the present invention is to provide an electrical bath for cleaning spectacles and similar articles wherein the articles are dipped for treatment in such a manner as to eliminate any danger of injury to the operator.

Another important object of the invention is to provide an apparatus of the character stated which will be of low cost to manufacture and not susceptible to the development of ready defects.

The present invention is an improvement on my co-pending application Serial No. 32,811, filed July 23, 1935. During the course of the following specification other important objects and advantages of the invention will become apparent to the reader.

In the drawings:

Figure 1 represents a vertical longitudinal sectional view through the apparatus.

Figure 2 represents a .vertical sectional .view

on line 2-2 of Figure 1.

Figure 3 represents a top plan view of the structure.

Figure 4 is a side elevational view of the switch box and operating arm thereof.

Figure 5 represents a sectional view taken substantially on line 55 of Figure 1.

Referring to the drawings wherein like numerals designate like parts, it can be seen that numeral 5 represents a base consisting of the end walls a-b and the side walls c-e.

Numeral 6 represents the tank supported upon the base 5 but insulated therefrom by a suitable intervening plate of asbestos'or the like denoted by numeral 1. Secured to the top wall 1 of the base 5 is the transformer (step down) denoted by numeral 8 and also the current rectifier 9. Depending from the top wall I is the bracket ID supporting the bearing H through which the shaft I2 is journalled, this shaft extending through the end wall D and being provided with an elongated hand lever l3 at its outer end.

An arm l4, preferably of some insulating material is secured to the inner end of the shaft 12 as at l5 and this arm l4 being pivotally connected at its outer end as at I6 to the connected rods i1 and i8. The rod I8 is guided by the guides l920 on the tank 6 and the upper end of this rod 3 is bent downwardly as at 2! into the tank 6. It is preferable that the rod l8 be of U-shape with the leg portions depending into the tank 6 in parallel relation and extending under the racks 2223 as at 24 then upwardly as at 25 to provide a stable cradle for the rack upon which the articles to be cleaned are placed. At the point where the members I! and I8 connect, rollers 26 are provided for riding against the back side of the wall e where the rod section ll extends through the vertical slot 21 therein.

As shown in Figure 5 a switch having a casing 28 includes the spring contactor 29 and the spring contactor 30 with which the contactor 29 is engageable. This contactor 29 is urged against the contact 30 by a cam 3| located on the shaft 32 which at its outer end as shown in Figure 4 has an arm 33 provided with a longitudinally extending slot 34 therein for receiving the lateral pin 35 projecting from the depending arm 35 on the shaft [2.

In a pocket 36 in the bottom of the tank 6 is located the electrical heating elements 31. The rectifier 9, step down transformer 8, switch 28 and heating. element 31 are all in circuit and controlled incidental to the actuation of the racks 22, 23 by the hand lever l3.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to Without departing from the spirit or scope of the invention as claimed hereinafter.

Having thus described my invention, what I claim as new is:

In an electrical bath, a tank, a hollow base, a shaft journaled for rotation in the bath, one end of the shaft extending outwardly of the base and provided with a handle, the inner portion of the shaft being provided with a laterally disposed arm, said base having itsside walls provided with a vertical slot through which the arm extends, a vertically movable bar having a cross member at its top, a plurality of U-shaped arms extending from the said cross member and depending into the tank and connecting members between the said U-shaped members adapted to form a rack in the tank.

PAUL J. GREULACH.

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